Communication between SIM7020G and Arduino nano

Other Hardware 3rd Party Boards
1

Greetings,

I am beginner to simcom controller series. I have M5Stack sim7020G NB-IOT module and I want to interface it with Arduino nano.

My question is that in sim7020G hardware guidelines its written that UART is working on 1.8V but arduino is working on 5V logic level.

So, if I have to connect both modules using UART communication. I have to shift voltage to 1.8V.

But in many tutorials I have seen that people are directly connecting arduino with SIM800,700,7000. What should I do?

Kindly, suggest how should I connect.

2

Is that talking about absolute maximum voltage or a logic level. What is the interface. Posting a link to the manual and schematic would help.

3

Looks like 1.8v is SIM card interface (not SIM7020G) and 3.0~ 4.6 is supply voltage to run the chip.

4

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